target/linux/rdc-2.6/files/drivers/net/r6040.c

   1 /* r6040.c: A RDC R6040 FastEthernet driver for linux. */
   2 /*
   3         Re-written 2004 by Sten Wang.
   4
   5         Copyright 1994-2000 by Donald Becker.
   6         Copyright 1993 United States Government as represented by the
   7         Director, National Security Agency.      This software may be used and
   8         distributed according to the terms of the GNU General Public License,
   9         incorporated herein by reference.
  10
  11         This driver is for RDC R6040 FastEthernet MAC series.
  12         For kernel version after 2.4.22
  13
  14         Modification List
  15         ----------      ------------------------------------------------
  16         08-24-2006      Support at linux 2.6.10 above
  17         03-24-2006      Support NAPI
  18         03-21-2006      By Charies,change spin_lock_irqsave(lp->lock, flags) to
  19                         spin_lock_irqsave(&lp->lock, flags) in set_multicast_list
  20         03-15-2006      Modify the set_multicast_list ,due to when re-plug the ethernet,
  21                         it will forget the previous setting
  22         07-12-2005      Tim, modify the set_multicast_list
  23         03-28-2005      Tim, modify some error mac register offset in
  24                         function set_multicast_list
  25         03-27-2005      Tim, Add the internal state machine reset
  26                         Sten, If multicast address more than 4, enter PROM mode
  27                         Changed rdc to r6040
  28         12-22-2004      Sten Init MAC MBCR register=0x012A
  29                         PHY_CAP = 0x01E1
  30
  31         Need to Do LIst:
  32         1. If multicast address more than 4, use the multicast address hash
  33 */
  34
  35 #define DRV_NAME        "r6040"
  36 #define DRV_VERSION     "0.13"
  37 #define DRV_RELDATE     "24Aug2006"
  38
  39 /* PHY CHIP Address */
  40 #define PHY1_ADDR       1       /* For MAC1 */
  41 #define PHY2_ADDR       2       /* For MAC2 */
  42 #define PHY_MODE        0x3100  /* PHY CHIP Register 0 */
  43 #define PHY_CAP         0x01E1  /* PHY CHIP Register 4 */
  44
  45 /* Time in jiffies before concluding the transmitter is hung. */
  46 #define TX_TIMEOUT      (6000 * HZ / 1000)
  47 #define TIMER_WUT       (jiffies + HZ * 1)/* timer wakeup time : 1 second */
  48
  49 /* RDC MAC ID */
  50 #define RDC_MAC_ID      0x6040
  51
  52 /* RDC MAC I/O Size */
  53 #define R6040_IO_SIZE   256
  54
  55 /* RDC Chip PCI Command */
  56 #define R6040_PCI_CMD   0x0005  /* IO, Master */
  57
  58 /* MAX RDC MAC */
  59 #define MAX_MAC         2
  60
  61 /* MAC setting */
  62 #define TX_DCNT         0x80    /* TX descriptor count */
  63 #define RX_DCNT         0x80    /* RX descriptor count */
  64 #define MAX_BUF_SIZE    0x600
  65 #define ALLOC_DESC_SIZE ((TX_DCNT+RX_DCNT)*sizeof(struct r6040_descriptor)+0x10)
  66 #define MBCR_DEFAULT    0x012A  /* MAC Bus Control Register */
  67
  68 /* Debug enable or not */
  69 #define RDC_DEBUG       0
  70
  71 #if RDC_DEBUG > 1
  72 #define RDC_DBUG(msg, value) printk("%s %x\n", msg, value);
  73 #else
  74 #define RDC_DBUG(msg, value)
  75 #endif
  76
  77
  78 #include <linux/module.h>
  79 #include <linux/version.h>
  80 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
  81 #include <linux/moduleparam.h>
  82 #endif
  83 #include <linux/kernel.h>
  84 #include <linux/string.h>
  85 #include <linux/timer.h>
  86 #include <linux/errno.h>
  87 #include <linux/ioport.h>
  88 #include <linux/slab.h>
  89 #include <linux/interrupt.h>
  90 #include <linux/pci.h>
  91 #include <linux/netdevice.h>
  92 #include <linux/etherdevice.h>
  93 #include <linux/skbuff.h>
  94 #include <linux/init.h>
  95 #include <linux/delay.h>        /* for udelay() */
  96 #include <linux/mii.h>
  97 #include <linux/ethtool.h>
  98 #include <linux/crc32.h>
  99 #include <linux/spinlock.h>
 100
 101 #include <asm/processor.h>
 102 #include <asm/bitops.h>
 103 #include <asm/io.h>
 104 #include <asm/irq.h>
 105 #include <asm/uaccess.h>
 106
 107 MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>");
 108 MODULE_LICENSE("GPL");
 109 #ifdef CONFIG_R6040_NAPI
 110 MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet Driver");
 111 #else
 112 MODULE_DESCRIPTION("RDC R6040 PCI FastEthernet Driver");
 113 #endif
 114
 115 #define R6040_INT_MASK                  0x0011
 116
 117 struct r6040_descriptor {
 118         u16     status, len;            /* 0-3 */
 119         u32     buf;                    /* 4-7 */
 120         u32     ndesc;                  /* 8-B */
 121         u32     rev1;                   /* C-F */
 122         char    *vbufp;                 /* 10-13 */
 123         struct r6040_descriptor *vndescp;       /* 14-17 */
 124         struct sk_buff *skb_ptr;        /* 18-1B */
 125         u32     rev2;                   /* 1C-1F */
 126 } __attribute__(( aligned(32) ));
 127
 128 struct r6040_private {
 129         struct net_device_stats stats;
 130         spinlock_t lock;
 131         struct timer_list timer;
 132         struct pci_dev *pdev;
 133
 134         struct r6040_descriptor *rx_insert_ptr;
 135         struct r6040_descriptor *rx_remove_ptr;
 136         struct r6040_descriptor *tx_insert_ptr;
 137         struct r6040_descriptor *tx_remove_ptr;
 138         u16     tx_free_desc, rx_free_desc, phy_addr, phy_mode;
 139         u16     mcr0, mcr1;
 140         dma_addr_t desc_dma;
 141         char    *desc_pool;
 142 };
 143
 144 struct r6040_chip_info {
 145         const char *name;
 146         u16 pci_flags;
 147         int io_size;
 148         int drv_flags;
 149 };
 150
 151 #ifdef CONFIG_R6040_NAPI
 152 static int NAPI_status;
 153 #endif
 154
 155 static int __devinitdata printed_version;
 156 #ifdef CONFIG_R6040_NAPI
 157 static char version[] __devinitdata =
 158         KERN_INFO DRV_NAME ": RDC R6040 NAPI net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
 159 #else
 160 static char version[] __devinitdata =
 161         KERN_INFO DRV_NAME ": RDC R6040 net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
 162 #endif
 163 static struct r6040_chip_info r6040_chip_info[] __devinitdata =
 164 {
 165         { "RDC R6040 Knight", R6040_PCI_CMD, R6040_IO_SIZE, 0}
 166 };
 167
 168 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
 169 static int NUM_MAC_TABLE = 2 ;
 170 #endif
 171
 172 static int phy_table[] = { 0x1, 0x2};
 173 static u8 adr_table[2][8] = {{0x00, 0x00, 0x60, 0x00, 0x00, 0x01}, {0x00, 0x00, 0x60, 0x00, 0x00, 0x02}};
 174
 175 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)
 176         module_param_array(adr_table, int, &NUM_MAC_TABLE, 0644);
 177 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
 178         module_param_array(adr_table, int, NUM_MAC_TABLE, 0644);
 179 #else
 180         MODULE_PARM(adr_table, "2-4i");
 181 #endif
 182 MODULE_PARM_DESC(adr_table, "MAC Address (assigned)");
 183
 184 static int r6040_open(struct net_device *dev);
 185 static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev);
 186 static irqreturn_t r6040_interrupt(int irq, void *dev_id, struct pt_regs *regs);
 187 static struct net_device_stats *r6040_get_stats(struct net_device *dev);
 188 static int r6040_close(struct net_device *dev);
 189 static void set_multicast_list(struct net_device *dev);
 190 static struct ethtool_ops netdev_ethtool_ops;
 191 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
 192 static void r6040_down(struct net_device *dev);
 193 static void r6040_up(struct net_device *dev);
 194 static void r6040_tx_timeout (struct net_device *dev);
 195 static void r6040_timer(unsigned long);
 196
 197 static int phy_mode_chk(struct net_device *dev);
 198 static int phy_read(int ioaddr, int phy_adr, int reg_idx);
 199 static void phy_write(int ioaddr, int phy_adr, int reg_idx, int dat);
 200 static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev);
 201 #ifdef CONFIG_R6040_NAPI
 202 static int r6040_poll(struct net_device *netdev, int *budget);
 203 #endif
 204
 205
 206 static int __devinit r6040_init_one (struct pci_dev *pdev,
 207                                          const struct pci_device_id *ent)
 208 {
 209         struct net_device *dev;
 210         struct r6040_private *lp;
 211         int ioaddr, io_size, err;
 212         static int card_idx = -1;
 213         int chip_id = (int)ent->driver_data;
 214
 215         RDC_DBUG("r6040_init_one()", 0);
 216
 217         if (printed_version++)
 218                 printk(version);
 219
 220         if ((err = pci_enable_device (pdev)))
 221                 return err;
 222
 223         /* this should always be supported */
 224         if (pci_set_dma_mask(pdev, 0xffffffff)) {
 225                 printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses not supported by the card!?\n");
 226                 return  -ENODEV;
 227         }
 228
 229         /* IO Size check */
 230         io_size = r6040_chip_info[chip_id].io_size;
 231         if (pci_resource_len  (pdev, 0) < io_size) {
 232                 return  -ENODEV;
 233         }
 234
 235         ioaddr = pci_resource_start (pdev, 0);  /* IO map base address */
 236         pci_set_master(pdev);
 237
 238         dev = alloc_etherdev(sizeof(struct r6040_private));
 239         if (dev == NULL)
 240                 return -ENOMEM;
 241         SET_MODULE_OWNER(dev);
 242
 243         if (pci_request_regions(pdev, DRV_NAME)) {
 244                 printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
 245                 err = -ENODEV;
 246                 goto err_out_disable;
 247         }
 248
 249         /* Init system & device */
 250         lp = dev->priv;
 251         dev->base_addr = ioaddr;
 252         dev->irq = pdev->irq;
 253
 254         spin_lock_init(&lp->lock);
 255         pci_set_drvdata(pdev, dev);
 256
 257         /* Set MAC address */
 258         card_idx++;
 259         memcpy(dev->dev_addr, (u8 *)&adr_table[card_idx][0], 6);
 260
 261         /* Link new device into r6040_root_dev */
 262         lp->pdev = pdev;
 263
 264         /* Init RDC private data */
 265         lp->mcr0 = 0x1002;
 266         lp->phy_addr = phy_table[card_idx];
 267
 268         /* The RDC-specific entries in the device structure. */
 269         dev->open = &r6040_open;
 270         dev->hard_start_xmit = &r6040_start_xmit;
 271         dev->stop = &r6040_close;
 272         dev->get_stats = &r6040_get_stats;
 273         dev->set_multicast_list = &set_multicast_list;
 274         dev->do_ioctl = &netdev_ioctl;
 275         dev->ethtool_ops = &netdev_ethtool_ops;
 276         dev->tx_timeout = &r6040_tx_timeout;
 277         dev->watchdog_timeo = TX_TIMEOUT;
 278 #ifdef CONFIG_R6040_NAPI
 279         dev->poll = &r6040_poll;
 280         dev->weight = 64;
 281 #endif
 282
 283         /* Register net device. After this dev->name assign */
 284         if ((err = register_netdev(dev))) {
 285                 printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
 286                 goto err_out_res;
 287         }
 288
 289         netif_carrier_on(dev);
 290         return 0;
 291
 292 err_out_res:
 293         pci_release_regions(pdev);
 294 err_out_disable:
 295         pci_disable_device(pdev);
 296         pci_set_drvdata(pdev, NULL);
 297         kfree(dev);
 298
 299         return err;
 300 }
 301
 302 static void __devexit r6040_remove_one (struct pci_dev *pdev)
 303 {
 304         struct net_device *dev = pci_get_drvdata(pdev);
 305
 306         unregister_netdev(dev);
 307         pci_release_regions(pdev);
 308         kfree(dev);
 309         pci_disable_device(pdev);
 310         pci_set_drvdata(pdev, NULL);
 311 }
 312
 313 static int
 314 r6040_open(struct net_device *dev)
 315 {
 316         struct r6040_private *lp = dev->priv;
 317         int i;
 318
 319         RDC_DBUG("r6040_open()", 0);
 320
 321         /* Request IRQ and Register interrupt handler */
 322         i = request_irq(dev->irq, &r6040_interrupt, SA_SHIRQ, dev->name, dev);
 323         if (i) return i;
 324
 325         /* Allocate Descriptor memory */
 326         lp->desc_pool = pci_alloc_consistent(lp->pdev, ALLOC_DESC_SIZE, &lp->desc_dma);
 327         if (!lp->desc_pool) return -ENOMEM;
 328
 329         r6040_up(dev);
 330
 331         netif_start_queue(dev);
 332
 333         /* set and active a timer process */
 334         init_timer(&lp->timer);
 335         lp->timer.expires = TIMER_WUT;
 336         lp->timer.data = (unsigned long)dev;
 337         lp->timer.function = &r6040_timer;
 338         add_timer(&lp->timer);
 339
 340         return 0;
 341 }
 342
 343 static void
 344 r6040_tx_timeout (struct net_device *dev)
 345 {
 346         struct r6040_private *lp = dev->priv;
 347         //int ioaddr = dev->base_addr;
 348         //struct r6040_descriptor *descptr = lp->tx_remove_ptr;
 349
 350         RDC_DBUG("r6040_tx_timeout()", 0);
 351
 352         /* Transmitter timeout, serious problems. */
 353         /* Sten: Nothing need to do so far. */
 354         printk(KERN_ERR DRV_NAME ": Big Trobule, transmit timeout/n");
 355         lp->stats.tx_errors++;
 356         netif_stop_queue(dev);
 357
 358 //printk("<RDC> XMT timedout: CR0 %x, CR40 %x, CR3C %x, CR2C %x, CR30 %x, CR34 %x, CR38 %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c), inw(ioaddr+0x2c), inw(ioaddr+0x30), inw(ioaddr+0x34), inw(ioaddr+0x38));
 359
 360 //printk("<RDC> XMT_TO: %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 361 }
 362
 363
 364 static int
 365 r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
 366 {
 367         struct r6040_private *lp = dev->priv;
 368         struct r6040_descriptor *descptr;
 369         int ioaddr = dev->base_addr;
 370         unsigned long flags;
 371
 372         RDC_DBUG("r6040_start_xmit()", 0);
 373
 374         if (skb == NULL)        /* NULL skb directly return */
 375                 return 0;
 376         if (skb->len >= MAX_BUF_SIZE) { /* Packet too long, drop it */
 377                 dev_kfree_skb(skb);
 378                 return 0;
 379         }
 380
 381         /* Critical Section */
 382         spin_lock_irqsave(&lp->lock, flags);
 383
 384         /* TX resource check */
 385         if (!lp->tx_free_desc) {
 386                 spin_unlock_irqrestore(&lp->lock, flags);
 387                 printk(KERN_ERR DRV_NAME ": NO TX DESC ");
 388                 return 1;
 389         }
 390
 391         /* Statistic Counter */
 392         lp->stats.tx_packets++;
 393         lp->stats.tx_bytes += skb->len;
 394
 395         /* Set TX descriptor & Transmit it */
 396         lp->tx_free_desc--;
 397         descptr = lp->tx_insert_ptr;
 398         if (skb->len < 0x3c) descptr->len = 0x3c;
 399         else descptr->len = skb->len;
 400         descptr->skb_ptr = skb;
 401         descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, skb->data, skb->len, PCI_DMA_TODEVICE));
 402         descptr->status = 0x8000;
 403         outw(0x01, ioaddr + 0x14);
 404         lp->tx_insert_ptr = descptr->vndescp;
 405
 406 #if RDC_DEBUG
 407  printk("Xmit(): %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 408 #endif
 409
 410         /* If no tx resource, stop */
 411         if (!lp->tx_free_desc)
 412                 netif_stop_queue(dev);
 413
 414         dev->trans_start = jiffies;
 415         spin_unlock_irqrestore(&lp->lock, flags);
 416         return 0;
 417 }
 418
 419 /* The RDC interrupt handler. */
 420 static irqreturn_t
 421 r6040_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 422 {
 423         struct net_device *dev = dev_id;
 424         struct r6040_private *lp;
 425         struct r6040_descriptor *descptr;
 426         struct sk_buff *skb_ptr;
 427         int ioaddr, status;
 428         unsigned long flags;
 429 #ifdef CONFIG_R6040_NAPI
 430         int handled = 1;
 431 #else
 432         int handled = 0;
 433 #endif
 434
 435         RDC_DBUG("r6040_interrupt()", 0);
 436         if (dev == NULL) {
 437                 printk (KERN_ERR DRV_NAME ": INT() unknown device.\n");
 438                 return IRQ_RETVAL(handled);
 439         }
 440
 441         lp = (struct r6040_private *)dev->priv;
 442         spin_lock_irqsave(&lp->lock, flags);
 443
 444         /* Check MAC Interrupt status */
 445         ioaddr = dev->base_addr;
 446         outw(0x0, ioaddr + 0x40);       /* Mask Off RDC MAC interrupt */
 447         status = inw(ioaddr + 0x3c);    /* Read INTR status and clear */
 448
 449
 450 #ifdef CONFIG_R6040_NAPI
 451
 452             if(netif_rx_schedule_prep(dev))
 453                 {
 454                 NAPI_status = status ;
 455                 __netif_rx_schedule(dev);
 456                 }
 457
 458         spin_unlock_irqrestore(&lp->lock, flags);
 459         return IRQ_RETVAL(handled);
 460 #else
 461         /* TX interrupt request */
 462         if (status & 0x10) {
 463                 handled = 1;
 464                 descptr = lp->tx_remove_ptr;
 465                 while(lp->tx_free_desc < TX_DCNT) {
 466                         if (descptr->status & 0x8000) break; /* Not complte */
 467                         skb_ptr = descptr->skb_ptr;
 468                         pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
 469                         dev_kfree_skb_irq(skb_ptr); /* Free buffer */
 470                         descptr->skb_ptr = 0;
 471                         descptr = descptr->vndescp; /* To next descriptor */
 472                         lp->tx_free_desc++;
 473                 }
 474                 lp->tx_remove_ptr = descptr;
 475                 if (lp->tx_free_desc) netif_wake_queue(dev);
 476         }
 477
 478         /* RX interrupt request */
 479         if (status & 0x01) {
 480                 handled = 1;
 481                 descptr = lp->rx_remove_ptr;
 482                 while(lp->rx_free_desc) {
 483                         if (descptr->status & 0x8000) break; /* No Rx packet */
 484                         skb_ptr = descptr->skb_ptr;
 485                         descptr->skb_ptr = 0;
 486                         skb_ptr->dev = dev;
 487                         skb_put(skb_ptr, descptr->len - 4);
 488                         pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
 489                         skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
 490                         netif_rx(skb_ptr);  /* Send to upper layer */
 491                         lp->stats.rx_packets++;
 492                         lp->stats.rx_bytes += descptr->len;
 493                         descptr = descptr->vndescp; /* To next descriptor */
 494                         lp->rx_free_desc--;
 495                 }
 496                 lp->rx_remove_ptr = descptr;
 497         }
 498
 499         /* Allocate new RX buffer */
 500         if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
 501
 502         outw(R6040_INT_MASK, ioaddr + 0x40);    /* TX/RX interrupt enable */
 503         spin_unlock_irqrestore(&lp->lock, flags);
 504 #endif
 505         return IRQ_RETVAL(handled);
 506 }
 507
 508
 509 static struct net_device_stats *
 510 r6040_get_stats(struct net_device *dev)
 511 {
 512         struct r6040_private *lp = dev->priv;
 513
 514         RDC_DBUG("r6040_get_stats()", 0);
 515         return &lp->stats;
 516 }
 517
 518 /*
 519  *     Set or clear the multicast filter for this adaptor.
 520  */
 521 static void
 522 set_multicast_list(struct net_device *dev)
 523 {
 524         struct r6040_private *lp = dev->priv;
 525         struct dev_mc_list *mcptr;
 526         int ioaddr = dev->base_addr;
 527         u16 *adrp, i;
 528         unsigned long flags;
 529
 530         RDC_DBUG("set_multicast_list()", 0);
 531
 532         /* MAC Address */
 533         adrp = (u16 *) dev->dev_addr;
 534         outw(adrp[0], ioaddr + 0x68);
 535         outw(adrp[1], ioaddr + 0x6A);
 536         outw(adrp[2], ioaddr + 0x6C);
 537
 538
 539 #if RDC_DEBUG
 540         printk("MAC ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
 541 #endif
 542
 543         /* Promiscous Mode */
 544         spin_lock_irqsave(&lp->lock, flags);
 545         i = inw(ioaddr) & ~0x0120;              /* Clear AMCP & PROM */
 546         if (dev->flags & IFF_PROMISC)
 547             {
 548                 i |= 0x0020;
 549                 lp->mcr0 |= 0x0020 ;
 550             }
 551         if (dev->mc_count > 4) i |= 0x0020;     /* Too many multicast address */
 552         outw(i, ioaddr);
 553         spin_unlock_irqrestore(&lp->lock, flags);
 554
 555         /* Multicast Address */
 556         if (dev->mc_count > 4)  /* Wait to do: Hash Table for multicast */
 557                 return;
 558
 559         /* Multicast Address 1~4 case */
 560         for (i = 0, mcptr = dev->mc_list; (i<dev->mc_count) && (i<4); i++) {
 561                 adrp = (u16 *)mcptr->dmi_addr;
 562                 outw(adrp[0], ioaddr + 0x70 + 8*i);
 563                 outw(adrp[1], ioaddr + 0x72 + 8*i);
 564                 outw(adrp[2], ioaddr + 0x74 + 8*i);
 565                 mcptr = mcptr->next;
 566 #if RDC_DEBUG
 567         printk("M_ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
 568 #endif
 569         }
 570         for (i = dev->mc_count; i < 4; i++) {
 571                 outw(0xffff, ioaddr + 0x68 + 8*i);
 572                 outw(0xffff, ioaddr + 0x6A + 8*i);
 573                 outw(0xffff, ioaddr + 0x6C + 8*i);
 574         }
 575 }
 576
 577 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
 578 {
 579         struct r6040_private *rp = dev->priv;
 580
 581         strcpy (info->driver, DRV_NAME);
 582         strcpy (info->version, DRV_VERSION);
 583         strcpy (info->bus_info, pci_name(rp->pdev));
 584 }
 585
 586 static struct ethtool_ops netdev_ethtool_ops = {
 587         .get_drvinfo            = netdev_get_drvinfo,
 588 };
 589
 590 static int
 591 r6040_close(struct net_device *dev)
 592 {
 593         struct r6040_private *lp = dev->priv;
 594
 595         RDC_DBUG("r6040_close()", 0);
 596
 597         /* deleted timer */
 598         del_timer_sync(&lp->timer);
 599
 600         spin_lock_irq(&lp->lock);
 601
 602         netif_stop_queue(dev);
 603
 604         r6040_down(dev);
 605
 606         spin_unlock_irq(&lp->lock);
 607
 608         return 0;
 609 }
 610
 611 /**
 612  */
 613 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
 614 {
 615         RDC_DBUG("netdev_ioctl()", 0);
 616         return 0;
 617 }
 618
 619 /**
 620         Stop RDC MAC and Free the allocated resource
 621  */
 622 static void r6040_down(struct net_device *dev)
 623 {
 624         struct r6040_private *lp = dev->priv;
 625         int i;
 626         int ioaddr = dev->base_addr;
 627
 628         RDC_DBUG("r6040_down()", 0);
 629
 630         /* Stop MAC */
 631         outw(0x0000, ioaddr + 0x40);    /* Mask Off Interrupt */
 632         outw(0x0001, ioaddr + 0x04);    /* Reset RDC MAC */
 633         i = 0;
 634         do{}while((i++ < 2048) && (inw(ioaddr + 0x04) & 0x1));
 635
 636         free_irq(dev->irq, dev);
 637
 638         /* Free RX buffer */
 639         for (i = 0; i < RX_DCNT; i++) {
 640                 if (lp->rx_insert_ptr->skb_ptr) {
 641                         pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
 642                         dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
 643                         lp->rx_insert_ptr->skb_ptr = 0;
 644                 }
 645                 lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
 646         }
 647
 648         /* Free TX buffer */
 649         for (i = 0; i < TX_DCNT; i++) {
 650                 if (lp->tx_insert_ptr->skb_ptr) {
 651                         pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_TODEVICE);
 652                         dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
 653                         lp->rx_insert_ptr->skb_ptr = 0;
 654                 }
 655                 lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
 656         }
 657
 658         /* Free Descriptor memory */
 659         pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, lp->desc_pool, lp->desc_dma);
 660 }
 661
 662
 663
 664 #ifdef CONFIG_R6040_NAPI
 665 static int r6040_poll(struct net_device *dev, int *budget)
 666 {
 667         struct r6040_private *lp;
 668         struct r6040_descriptor *descptr;
 669         struct sk_buff *skb_ptr;
 670         int ioaddr, status;
 671         unsigned long flags;
 672
 673
 674         ioaddr = dev->base_addr;
 675         lp = (struct r6040_private *)dev->priv;
 676         unsigned long rx_work = dev->quota ;
 677         unsigned long rx ;
 678
 679
 680 #if 1
 681         /* TX interrupt request */
 682         if (NAPI_status & 0x10) {
 683
 684                 descptr = lp->tx_remove_ptr;
 685                 while(lp->tx_free_desc < TX_DCNT) {
 686                         if (descptr->status & 0x8000) break; /* Not complte */
 687                         skb_ptr = descptr->skb_ptr;
 688                         pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
 689                         dev_kfree_skb_irq(skb_ptr); /* Free buffer */
 690                         descptr->skb_ptr = 0;
 691                         descptr = descptr->vndescp; /* To next descriptor */
 692                         lp->tx_free_desc++;
 693                 }
 694                 lp->tx_remove_ptr = descptr;
 695                 if (lp->tx_free_desc) netif_wake_queue(dev);
 696         }
 697 #endif
 698 #if 1
 699         /* RX interrupt request */
 700         if (NAPI_status & 0x01) {
 701
 702                 descptr = lp->rx_remove_ptr;
 703                 while(lp->rx_free_desc) {
 704                         if (descptr->status & 0x8000) break; /* No Rx packet */
 705                         skb_ptr = descptr->skb_ptr;
 706                         descptr->skb_ptr = 0;
 707                         skb_ptr->dev = dev;
 708                         skb_put(skb_ptr, descptr->len - 4);
 709                         pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
 710                         skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
 711                         netif_receive_skb(skb_ptr); /* Send to upper layer */
 712                         lp->stats.rx_packets++;
 713                         lp->stats.rx_bytes += descptr->len;
 714                         descptr = descptr->vndescp; /* To next descriptor */
 715                         lp->rx_free_desc--;
 716                 }
 717                 lp->rx_remove_ptr = descptr;
 718
 719         }
 720         /* Allocate new RX buffer */
 721         if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
 722
 723         local_irq_disable();
 724         netif_rx_complete(dev);
 725         outw(R6040_INT_MASK,ioaddr + 0x40);
 726         local_irq_enable();
 727         return 0;
 728 #endif
 729 }
 730 #endif
 731
 732 /* Init RDC MAC */
 733 static void r6040_up(struct net_device *dev)
 734 {
 735         struct r6040_private *lp = dev->priv;
 736         struct r6040_descriptor *descptr;
 737         int i;
 738         int ioaddr = dev->base_addr;
 739         u32 tmp_addr;
 740         dma_addr_t desc_dma, start_dma;
 741
 742         RDC_DBUG("r6040_up()", 0);
 743
 744         /* Initilize */
 745         lp->tx_free_desc = TX_DCNT;
 746         lp->rx_free_desc = 0;
 747
 748         /* Init descriptor */
 749         memset(lp->desc_pool, 0, ALLOC_DESC_SIZE); /* Let all descriptor = 0 */
 750         lp->tx_insert_ptr = (struct r6040_descriptor *)lp->desc_pool;
 751         lp->tx_remove_ptr = lp->tx_insert_ptr;
 752         lp->rx_insert_ptr = (struct r6040_descriptor *)lp->tx_insert_ptr+TX_DCNT;
 753         lp->rx_remove_ptr = lp->rx_insert_ptr;
 754
 755         /* Init TX descriptor */
 756         descptr = lp->tx_insert_ptr;
 757         desc_dma = lp->desc_dma;
 758         start_dma = desc_dma;
 759         for (i = 0; i < TX_DCNT; i++) {
 760                 descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
 761                 descptr->vndescp = (descptr + 1);
 762                 descptr = (descptr + 1);
 763                 desc_dma += sizeof(struct r6040_descriptor);
 764         }
 765         (descptr - 1)->ndesc = cpu_to_le32(start_dma);
 766         (descptr - 1)->vndescp = lp->tx_insert_ptr;
 767
 768         /* Init RX descriptor */
 769         start_dma = desc_dma;
 770         descptr = lp->rx_insert_ptr;
 771         for (i = 0; i < RX_DCNT; i++) {
 772                 descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
 773                 descptr->vndescp = (descptr + 1);
 774                 descptr = (descptr + 1);
 775                 desc_dma += sizeof(struct r6040_descriptor);
 776         }
 777         (descptr - 1)->ndesc = cpu_to_le32(start_dma);
 778         (descptr - 1)->vndescp = lp->rx_insert_ptr;
 779
 780         /* Allocate buffer for RX descriptor */
 781         rx_buf_alloc(lp,dev);
 782
 783 #if RDC_DEBUG
 784 descptr = lp->tx_insert_ptr;
 785 for (i = 0; i < TX_DCNT; i++) {
 786  printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 787  descptr = descptr->vndescp;
 788 }
 789 descptr = lp->rx_insert_ptr;
 790 for (i = 0; i < RX_DCNT; i++) {
 791  printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 792  descptr = descptr->vndescp;
 793 }
 794 #endif
 795
 796         /* MAC operation register */
 797         outw(0x01, ioaddr+0x04);        /* Reset MAC */
 798         outw(2   , ioaddr+0xAC);        /* Reset internal state machine */
 799         outw(0   , ioaddr+0xAC);
 800         udelay(5000);
 801
 802         /* TX and RX descriptor start Register */
 803         tmp_addr = cpu_to_le32(lp->tx_insert_ptr);
 804         tmp_addr = virt_to_bus((volatile void *)tmp_addr);
 805         outw((u16) tmp_addr, ioaddr+0x2c);
 806         outw(tmp_addr >> 16, ioaddr+0x30);
 807         tmp_addr = cpu_to_le32(lp->rx_insert_ptr);
 808         tmp_addr = virt_to_bus((volatile void *)tmp_addr);
 809         outw((u16) tmp_addr, ioaddr+0x34);
 810         outw(tmp_addr >> 16, ioaddr+0x38);
 811
 812         /* Buffer Size Register */
 813         outw(MAX_BUF_SIZE, ioaddr+0x18);
 814
 815         /* PHY Mode Check */
 816         phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
 817         phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
 818
 819         if (PHY_MODE == 0x3100)
 820                 lp->phy_mode = phy_mode_chk(dev);
 821         else lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
 822
 823         /* MAC Bus Control Register */
 824         outw(MBCR_DEFAULT, ioaddr+0x8);
 825
 826         /* MAC TX/RX Enable */
 827         lp->mcr0 |= lp->phy_mode;
 828         outw(lp->mcr0, ioaddr);
 829
 830         /* Interrupt Mask Register */
 831         outw(R6040_INT_MASK, ioaddr + 0x40);
 832 }
 833
 834 /*
 835   A periodic timer routine
 836         Polling PHY Chip Link Status
 837 */
 838 static void r6040_timer(unsigned long data)
 839 {
 840         struct net_device *dev=(struct net_device *)data;
 841         struct r6040_private *lp = dev->priv;
 842         u16 ioaddr = dev->base_addr, phy_mode;
 843
 844         RDC_DBUG("r6040_timer()", 0);
 845
 846         /* Polling PHY Chip Status */
 847         if (PHY_MODE == 0x3100)
 848                 phy_mode = phy_mode_chk(dev);
 849         else phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
 850
 851         if (phy_mode != lp->phy_mode) {
 852                 lp->phy_mode = phy_mode;
 853                 lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
 854                 outw(lp->mcr0, ioaddr);
 855                 printk("<RDC> Link Change %x \n", inw(ioaddr));
 856         }
 857
 858         /* Debug */
 859 //      printk("<RDC> Timer: CR0 %x CR40 %x CR3C %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c));
 860
 861         /* Timer active again */
 862         lp->timer.expires = TIMER_WUT;
 863         add_timer(&lp->timer);
 864 }
 865
 866 /* Allocate skb buffer for rx descriptor */
 867 static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev)
 868 {
 869         struct r6040_descriptor *descptr;
 870         int ioaddr = dev->base_addr ;
 871
 872         RDC_DBUG("rx_buf_alloc()", 0);
 873         descptr = lp->rx_insert_ptr;
 874         while(lp->rx_free_desc < RX_DCNT){
 875                 descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE);
 876                 if (!descptr->skb_ptr) break;
 877                 descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, descptr->skb_ptr->tail, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
 878                 descptr->status = 0x8000;
 879                 descptr = descptr->vndescp;
 880                 lp->rx_free_desc++;
 881                 outw(lp->mcr0 | 0x0002, ioaddr);        //Trigger Rx DMA
 882         }
 883         lp->rx_insert_ptr = descptr;
 884 }
 885
 886 /* Status of PHY CHIP */
 887 static int phy_mode_chk(struct net_device *dev)
 888 {
 889         struct r6040_private *lp = dev->priv;
 890         int ioaddr = dev->base_addr, phy_dat;
 891
 892         RDC_DBUG("phy_mode_chk()", 0);
 893
 894         /* PHY Link Status Check */
 895         phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
 896         if (!(phy_dat & 0x4)) return 0x8000;    /* Link Failed, full duplex */
 897
 898         /* PHY Chip Auto-Negotiation Status */
 899         phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
 900         if (phy_dat & 0x0020) {
 901                 /* Auto Negotiation Mode */
 902                 phy_dat = phy_read(ioaddr, lp->phy_addr, 5);
 903                 phy_dat &= phy_read(ioaddr, lp->phy_addr, 4);
 904                 if (phy_dat & 0x140) phy_dat = 0x8000;
 905                 else phy_dat = 0;
 906         } else {
 907                 /* Force Mode */
 908                 phy_dat = phy_read(ioaddr, lp->phy_addr, 0);
 909                 if (phy_dat & 0x100) phy_dat = 0x8000;
 910                 else phy_dat = 0x0000;
 911         }
 912
 913         return phy_dat;
 914 };
 915
 916 /* Read a word data from PHY Chip */
 917 static int phy_read(int ioaddr, int phy_addr, int reg_idx)
 918 {
 919         int i = 0;
 920
 921         RDC_DBUG("phy_read()", 0);
 922         outw(0x2000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
 923         do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x2000) );
 924
 925         return inw(ioaddr + 0x24);
 926 }
 927
 928 /* Write a word data from PHY Chip */
 929 static void phy_write(int ioaddr, int phy_addr, int reg_idx, int dat)
 930 {
 931         int i = 0;
 932
 933         RDC_DBUG("phy_write()", 0);
 934         outw(dat, ioaddr + 0x28);
 935         outw(0x4000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
 936         do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x4000) );
 937 }
 938
 939 enum {
 940         RDC_6040 = 0
 941 };
 942
 943 static struct pci_device_id r6040_pci_tbl[] = {
 944         {0x17F3, 0x6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
 945         //{0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
 946         {0,}                    /* terminate list */
 947 };
 948 MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
 949
 950 static struct pci_driver r6040_driver = {
 951         .name           = "r6040",
 952         .id_table       = r6040_pci_tbl,
 953         .probe          = r6040_init_one,
 954         .remove         = __devexit_p(r6040_remove_one),
 955 };
 956
 957
 958 static int __init r6040_init (void)
 959 {
 960         RDC_DBUG("r6040_init()", 0);
 961
 962         printk(version);
 963         printed_version = 1;
 964
 965         return pci_module_init (&r6040_driver);
 966 }
 967
 968
 969 static void __exit r6040_cleanup (void)
 970 {
 971         RDC_DBUG("r6040_cleanup()", 0);
 972         pci_unregister_driver (&r6040_driver);
 973 }
 974
 975 module_init(r6040_init);
 976 module_exit(r6040_cleanup);
 977
 978
 979 /*
 980  * Local variables:
 981  *  compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c r6040.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"
 982  *  c-indent-level: 4
 983  *  c-basic-offset: 4
 984  *  tab-width: 4
 985  * End:
 986  */